I'm afraid we can't.
恐怕我们不能。
I got a raise last month.
我上个月加薪。
I'm not sure I can agree.
我恐怕不能同意。......
I'm not sure about that.
我不确定那样是不是好。
There must be some other ways?
一定有其他的方法吧?
Surely you remember him?
你一定记得他吧?
What are you talking about?
你在说什么啊?
Are you crazy?
你疯了吗?
You are joking!
你开玩笑!
You must be kidding.
你一定是在开玩笑!